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3 years ago

WILL GIVE BRAINEST

2 answers:

8 0

Answer is D. Add the equations in order to solve for the first variable. Plug this value into the other equations in order to solve for th remaining varables

quester [9]3 years ago

7 0

2x + 4y = 10
3x - 4y = 5

5x = 15 add the 2 rows together

x = 3

substitute x = 3 into any of the two equations

2x + 4y = 10

2(3) + 4y = 10

6 + 4y = 10

4y = 4

y = 1

d. (3, 1)

hope this helped, God bless!

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What is the solution to this equation?

tresset_1 [31]

Answer:

x = 9

Step-by-step explanation:

First, we want to isolate variable x on the left side of the equation. We can do this by adding 13 to both sides.

x - 13 + 13 = - 4 + 13

x = 9

8 0

3 years ago

Read 2 more answers

Help ASAP!! This one's is difficult for me to understand!! Help me please!

IceJOKER [234]

Answer:

Ok so im in 7thgrade so ima try to help answer is x= 8x9

4 0

3 years ago

The measures of the angles of a convex polygon form an arithmetic sequence. The least measurement in the sequence is 128º. The g

Over [174]

$\bf \qquad \qquad \textit{sum of a finite arithmetic sequence}\\\\
S_n=\cfrac{n}{2}(a_1+a_n)\quad 
\begin{cases}
n=n^{th}\ term\\
a_1=\textit{first term's value}\\ a_n=n^{th}~value\\
----------\\
\stackrel{least}{a_1}=128\\\\
\stackrel{greatest}{a_n}=172
\end{cases}$

$\bf S_n=\cfrac{n}{2}(128~+~172)\implies S_n=\cfrac{n}{2}(300)\implies S_n=150n
\\\\\\
\textit{but we also know that sum of all interior angles is }180(n-2)
\\\\\\
\stackrel{\textit{sum of the angles}}{S_n}=\stackrel{\textit{sum of the angles}}{180(n-2)}=150n
\\\\\\
180n-360=150n\implies 30n=360\implies n=\cfrac{360}{30}\implies n=12$

7 0

2 years ago

Read 2 more answers

-<br> Use the order of operations to simplify 4(3.5 - 1.5) -

irinina [24]

Answer:

When simplified this equation equals 8.

Step-by-step explanation:

Let me show you my work.

4 ( 3.5 - 1.5 ) = 4 ( 2 )

4 ( 2 ) = 8 because 4 times 2 = 8

Hope this helps. . .

UwU

6 0

2 years ago

Read 2 more answers

A variety pack of snacks contains 4 pretzel bags, 3 popcorn bags and 3 cheddar cracker bags. What is the probability that someon

Svetlanka [38]

Answer:

2/15

Step-by-step explanation:

Given that :

pretzel = 4

Popcorn = 3

Cheddar cracker = 3

Total = 4 + 3 + 3 = 10

Probability = Required outcome / Total possible outcomes

Selecting with replacement :

First selection :

P(pretzel bag) = 4 / 10

Second selection :

P(pretzel bag) = 3 / 9

P(2 pretzel bags) = 4/10 * 3/9 = 12 / 90 = 2/15

5 0

3 years ago